100% Free Tool
Video Watermark
Add text or image overlays to your videos directly in the browser. Customize position, opacity, font size, and colors - then export as MP4 or WebM with no watermarks on the watermarker.
Drop a video file to watermark, or click to browse
MP4, WebM, MOV, MKV, AVI — up to 2 GB
Why Use Our Video Watermark Tool?
Protect your content or brand your videos without expensive software or cloud services.
Text Watermarks
Add custom text with full control over font size, color, opacity, and background. Place it anywhere with 7 position presets and adjustable margins.
Image Overlays
Overlay your logo or any PNG/JPG/WebP image. Control the scale relative to video width and adjust opacity for a subtle or bold look.
Complete Privacy
All processing happens locally using FFmpeg WebAssembly. Your video never leaves your device - zero data sent to any server.
How to Add a Video Watermark
Three simple steps to protect or brand your video content.
Upload Your Video
Drag and drop or click to browse. Supports MP4, WebM, MOV, MKV, and AVI - up to 2 GB.
Configure Your Watermark
Choose text or image mode. Customize the content, position, size, opacity, and colors. See an approximate preview before processing.
Apply & Download
FFmpeg renders the watermark at full resolution. Preview the result and download as MP4 or WebM.
Watermark Features
- Text watermarks: Custom text with adjustable font size, color, opacity, and background box
- Image overlays: Upload PNG, JPG, or WebP logos with scalable size and transparency
- 7 position presets: Top-left, top-center, top-right, center, bottom-left, bottom-center, bottom-right
- Live preview: See an approximate preview of watermark placement before processing
- No limits: No watermarks on the output, no account required, and no rate limits
Frequently Asked Questions
Is my video uploaded to a server?
No. All processing happens in your browser using FFmpeg WebAssembly. Your video never leaves your device, ensuring complete privacy.
What video formats are supported?
MP4, WebM, MOV, MKV, and AVI for input. Output is available as MP4 (H.264) or WebM (VP9). Most common video formats work.
Can I add both text and image watermarks?
Currently you can apply one watermark type per operation - either text or image. To combine both, apply one watermark first, download the result, then use it as input to add the second watermark.
What image formats can I use as an overlay?
PNG, JPG, and WebP images up to 10 MB. PNG is recommended for logos since it supports transparency, which lets the video show through around your logo's edges.
How long does processing take?
Processing time depends on video length, resolution, and your device's performance. A 30-second 1080p video typically takes 30-90 seconds. The first run also downloads the FFmpeg engine (~30 MB), which is cached for subsequent uses.
Is this tool really free?
Yes, completely free with no limitations. Since all processing happens in your browser, there are no server costs. No watermarks on the output, no account required, and no rate limits.
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